Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity
Carbon dioxide (CO2) is a significant greenhouse gas. This causes harm to the environment and to humans. In 2023, atmospheric CO2 levels rose to 420 ppm, marking a new record high. Therefore, technology for capturing CO2 has been developed. At present, a wide variety of technologies have been propo...
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Environmental Research Institute, Chulalongkorn University
2025-01-01
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| Series: | Applied Environmental Research |
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| Online Access: | https://ph01.tci-thaijo.org/index.php/aer/article/view/258393 |
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| author | Petpitcha Boonmatoon Pacharapol Nokpho Pornpote Piumsomboon Benjapon Chalermsinsuwan |
| author_facet | Petpitcha Boonmatoon Pacharapol Nokpho Pornpote Piumsomboon Benjapon Chalermsinsuwan |
| author_sort | Petpitcha Boonmatoon |
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Carbon dioxide (CO2) is a significant greenhouse gas. This causes harm to the environment and to humans. In 2023, atmospheric CO2 levels rose to 420 ppm, marking a new record high. Therefore, technology for capturing CO2 has been developed. At present, a wide variety of technologies have been proposed to capture CO2. Adsorption technology is more affordable and requires less energy for regeneration. There are many potential solid adsorbents for CO2 capture, such as zeolites, alumina, metal‒organic frameworks (MOFs), and mesoporous silicas. Silica materials possess unique properties that make them promising candidates as solid sorbents for CO2 capture. They provide several benefits, such as high adsorption capacity under dry conditions at ambient temperature, along with low energy requirements for regeneration. Amine-functionalized silica adsorbents are among the most promising methods for CO2 capture, offering high efficiency and high uptake rates. In this study, silica gels were grafted and impregnated with amines via methyl diethanolamine (MDEA). The effects of water content and amine loading on CO2 capture performance were investigated. The MDEAs grafted and impregnated on silica gel exhibited excellent CO2 efficiencies of 0.36 and 0.38 mg CO2 per gram sorbent, respectively, which are higher than the 15% efficiency of the unmodified adsorbent. The results showed that the modified silica gel had high CO2 efficiency during the first three adsorption‒regeneration cycles when the water content and amine loading increased. Moreover, the nitrogen content increased with increasing water content, leading to an increase in the adsorption capacity.
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| format | Article |
| id | doaj-art-73593f31e6b9430c9b01cbfff4294ac6 |
| institution | Kabale University |
| issn | 2287-075X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Environmental Research Institute, Chulalongkorn University |
| record_format | Article |
| series | Applied Environmental Research |
| spelling | doaj-art-73593f31e6b9430c9b01cbfff4294ac62025-02-11T11:08:19ZengEnvironmental Research Institute, Chulalongkorn UniversityApplied Environmental Research2287-075X2025-01-01471Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture CapacityPetpitcha Boonmatoon0Pacharapol Nokpho1Pornpote Piumsomboon2Benjapon Chalermsinsuwan3Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok, ThailandDepartment of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok, ThailandDepartment of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok, ThailandDepartment of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand Carbon dioxide (CO2) is a significant greenhouse gas. This causes harm to the environment and to humans. In 2023, atmospheric CO2 levels rose to 420 ppm, marking a new record high. Therefore, technology for capturing CO2 has been developed. At present, a wide variety of technologies have been proposed to capture CO2. Adsorption technology is more affordable and requires less energy for regeneration. There are many potential solid adsorbents for CO2 capture, such as zeolites, alumina, metal‒organic frameworks (MOFs), and mesoporous silicas. Silica materials possess unique properties that make them promising candidates as solid sorbents for CO2 capture. They provide several benefits, such as high adsorption capacity under dry conditions at ambient temperature, along with low energy requirements for regeneration. Amine-functionalized silica adsorbents are among the most promising methods for CO2 capture, offering high efficiency and high uptake rates. In this study, silica gels were grafted and impregnated with amines via methyl diethanolamine (MDEA). The effects of water content and amine loading on CO2 capture performance were investigated. The MDEAs grafted and impregnated on silica gel exhibited excellent CO2 efficiencies of 0.36 and 0.38 mg CO2 per gram sorbent, respectively, which are higher than the 15% efficiency of the unmodified adsorbent. The results showed that the modified silica gel had high CO2 efficiency during the first three adsorption‒regeneration cycles when the water content and amine loading increased. Moreover, the nitrogen content increased with increasing water content, leading to an increase in the adsorption capacity. https://ph01.tci-thaijo.org/index.php/aer/article/view/258393AdsorptionDesorptionSilica gelAmine-functionalized sorbentDirect-air CO2 capture |
| spellingShingle | Petpitcha Boonmatoon Pacharapol Nokpho Pornpote Piumsomboon Benjapon Chalermsinsuwan Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity Applied Environmental Research Adsorption Desorption Silica gel Amine-functionalized sorbent Direct-air CO2 capture |
| title | Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity |
| title_full | Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity |
| title_fullStr | Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity |
| title_full_unstemmed | Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity |
| title_short | Enhanced CO2 Capture Performance Using Methyl Diethanolamine-functionalized Silica Gels: Assessing CO2 Capture Capacity |
| title_sort | enhanced co2 capture performance using methyl diethanolamine functionalized silica gels assessing co2 capture capacity |
| topic | Adsorption Desorption Silica gel Amine-functionalized sorbent Direct-air CO2 capture |
| url | https://ph01.tci-thaijo.org/index.php/aer/article/view/258393 |
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